期刊
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
卷 10, 期 1, 页码 285-296出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JESTPE.2021.3105610
关键词
Inverters; Batteries; Synchronous motors; Voltage control; Permanent magnet motors; Zero voltage switching; Transistors; Combined; converter; dc-ac; electrical vehicle; high efficiency; motor; step down; step up
资金
- Universitat Rovira i Virgili [URV-2017SGR00983]
- Spanish Agencia Estatal de Investigacion (AEI)
- Fondo Europeo de Desarrollo Regional (FEDER) [DPI2016-80491-R]
This article presents a new isolated inverter for an electric vehicle powertrain system, which uses step-up and step-down dc-link voltage regulation to improve system performance in a wide range of load and battery levels.
Motor inverter high-voltage regulation improves the system efficiency and reduces the dimensions of a permanent magnet synchronous motor (PMSM). This article presents an isolated inverter with step-up and step-down dc-link voltage regulation for an electrical vehicle powertrain system, which will improve the system performance in wide ranges of load and battery levels. Step-up and step-down converter and the motor inverter are merged into a single converter. Bidirectional and galvanically isolated energy transmission between battery and motor with reduced semiconductors number, easy control, and high efficiency are demonstrated. In addition, inverter transistors' RMS current results lower than in common solutions. Topology waveforms, devices losses, and zero-voltage switching (ZVS) condition are analyzed. Based on this study, a converter design procedure to meet main electrical vehicles requirements is proposed. Converter operation and design procedure are verified by simulation and experiment in two prototypes of 3.3 kW and 300 W.
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